Get help on your own in linux

In linux, you can use the-h or -- help parameter to obtain help information for almost all commands. man ls can also obtain detailed help information for ls commands. man-k XXX can be viewed. the document that contains the keyword XXX also has a more detailed command called info. After man and info enter help, you can use the search command to enter/XXX to search for all the keywords XXX and highlight and Press space. if you still think it is not detailed enough, if you are not satisfied with this, most of the software will contain a help document. In the/usr/share/doc directory, the document is usually plain text, html, or pdf. You can also google it at the end.